making posts/destroy redirect to topic show_new instead of first page, simplifying posts/update redirect action
making posts/destroy redirect to topic show_new instead of first page, simplifying posts/update redirect action

git-svn-id: 295275ead0c997ff8920a9abe88dec0903829be9@553 9c008b19-a030-0410-9975-d76d301b4276

nickmerwin/skylineonline,nickmerwin/skylineonline